The secret history of the St. Louis Post Office and its amazing pneumatic tube – Boing Boing
|
The secret history of the St. Louis Post Office and its amazing pneumatic tube
Boing Boing In 1905, the St. Louis post office built a two-mile pneumatic tube system to deliver mail between the train station and the post office. It was expensive to maintain ($17,000 per year per mile of tube) and ruined a lot of mail. From Aimee Levitt's … |
More: continued here